Use After Free in Oracle Linux
CVE-2022-21504
The code in UEK6 U3 was missing an appropiate file descriptor count to be missing. This resulted in a use count error that allowed a file descriptor to a socket to be closed and freed while it was still in use by another portion of the kernel. An attack with local access can operate on the socket, and cause a denial of service. CVSS 3.1 Base Score 5.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Vulnerability class: Use-After-Free
EPSS: 0.002 (16.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Oracle Linux — versions 7, 8
- Oracle Corporation Linux — versions Oracle Linux: 7, Oracle Linux: 8
Weakness classification (CWE)
References
- secalert_us@oracle.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-21504?
- CVE-2022-21504 is a medium-severity vulnerability in Oracle Linux, classified under Use After Free. CVSS score: 5.5/10. Published 2022-06-14.
- How severe is CVE-2022-21504?
- Medium severity. CVSS v3 base score is 5.5 out of 10.